HitopadeshaAnushtubh
परोऽपि हितवान्बन्धुः बन्धुरप्यहितः परः । अहितो देहजो व्याधिः हितमारण्यमौषधम् ॥
A stranger who wishes you well is a kinsman; a relative who harms you is a stranger. A disease born within the body is harmful; a herb growing in a distant forest is beneficial.
abyasam.com/en/subhashitam/sub-paro-hitavan-bandhuh-105
friendshipethicsrealismvirtue